CN115465334A - Train speed measurement and positioning safety platform and use method - Google Patents
Train speed measurement and positioning safety platform and use method Download PDFInfo
- Publication number
- CN115465334A CN115465334A CN202211112049.7A CN202211112049A CN115465334A CN 115465334 A CN115465334 A CN 115465334A CN 202211112049 A CN202211112049 A CN 202211112049A CN 115465334 A CN115465334 A CN 115465334A
- Authority
- CN
- China
- Prior art keywords
- speed
- train
- data
- positioning
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 100
- 238000004891 communication Methods 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 4
- 238000012827 research and development Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 231100000279 safety data Toxicity 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/021—Measuring and recording of train speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0072—On-board train data handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/026—Relative localisation, e.g. using odometer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a train speed measurement and positioning safety platform and a use method thereof, wherein the safety platform is applied to rail transit trains and comprises the following steps: the speed acquisition module group is connected with the speed measuring equipment of the train and is used for acquiring the speed data of the train; the positioning acquisition module group is connected with auxiliary positioning equipment of the train and is used for acquiring the auxiliary positioning data of the train; and the data processing module group is respectively connected with the speed acquisition module group, the positioning acquisition module group and the vehicle-mounted system of the train, and is used for respectively carrying out two-out comparison processing on the acquired speed data and the acquired auxiliary positioning data of the train and transmitting the successfully compared speed data and the successfully compared auxiliary positioning data to the vehicle-mounted system so as to acquire the position information of the train. The invention can support different sensor combinations, saves research and development cost and research and development period, and improves the stability, the universality and the reuse rate of the speed measuring and positioning safety platform.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a universal and reusable train speed measuring and positioning safety platform and a using method thereof.
Background
With the rapid development of rail transit and computers, in order to meet the increasing demand of passenger flow and the demand of train operation efficiency, the train-mounted system needs to be comprehensively upgraded and higher requirements are provided for the upgrade. The high-precision speed measurement and positioning technology is used as the core of a vehicle-mounted system, the running distance of the train can be obtained by continuously measuring the running speed of the train and integrating the instant speed of the train, and the position information of the train can be obtained by assisting other positioning methods (such as inquiry-transponder positioning and electronic map matching).
The sensors used for train speed measurement mainly comprise: pulse rate sensors, doppler radars, GNSS (Global Navigation Satellite System), accelerometers, and the like, and transponders are commonly used as auxiliary positioning devices. Different vehicle-mounted systems are influenced by factors such as train types, standards, line environments, algorithms and the like, and different sensor combinations are usually adopted to acquire speed and position information of a train; for example, some vehicle-mounted systems measure speed by adopting a combination mode of a pulse speed sensor and an accelerometer, some vehicle-mounted systems measure speed by adopting a combination mode of a pulse speed sensor and a Doppler radar, and some vehicle-mounted systems measure speed by adopting a combination mode of a pulse speed sensor and a GNSS. However, this involves a lot of repetitive labor, extending the development cycle of the entire on-board system.
Disclosure of Invention
The invention aims to provide a speed-measuring and positioning safety platform for a train and a using method thereof, which can support different sensor combinations, save research and development cost and research and development period, and improve the stability, the universality and the reusability of the speed-measuring and positioning safety platform.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a train location safety platform that tests speed, is applied to rail transit train, includes:
the speed acquisition module group is connected with the speed measuring equipment of the train and is used for acquiring the speed data of the train;
the positioning acquisition module group is connected with auxiliary positioning equipment of the train and is used for acquiring auxiliary positioning data of the train; and
and the data processing module group is respectively connected with the speed acquisition module group, the positioning acquisition module group and the vehicle-mounted system of the train, and is used for respectively carrying out two-out comparison processing on the acquired speed data and the acquired auxiliary positioning data of the train and transmitting the successfully compared speed data and the successfully compared auxiliary positioning data to the vehicle-mounted system so as to acquire the position information of the train.
Preferably, the speed measuring device of the train comprises: a first sensor and a second sensor; the first sensor is used for acquiring first speed data of the train, and the second sensor is used for acquiring second speed data of the train; and the first speed data and the second speed data of the train constitute speed combination data of the train.
Preferably, the first sensor is of the type of a pulse tachometer sensor; the types of the second sensor include a doppler radar, an optical velocity sensor, a GNSS speed measurement device, and an accelerometer.
Preferably, the speed acquisition module group comprises a first speed acquisition module and a second speed acquisition module which are redundant with each other;
the first speed acquisition module and the second speed acquisition module comprise two speed acquisition units;
each speed acquisition unit is respectively connected with the first sensor and the second sensor and is used for acquiring first speed data and second speed data of the train so as to obtain speed combination data of the train.
Preferably, the positioning acquisition module group includes a first positioning acquisition module and a second positioning acquisition module that are redundant to each other;
the first positioning acquisition module and the second positioning acquisition module both comprise two redundant positioning acquisition units;
each positioning acquisition unit is connected with the auxiliary positioning equipment and used for acquiring the auxiliary positioning data of the train.
Preferably, the data processing module group includes a first data processing module and a second data processing module that are redundant to each other;
the first data processing module and the second data processing module comprise two data processing units;
each data processing unit is connected with the vehicle-mounted system, all the speed acquisition units and all the positioning acquisition units, and is used for carrying out consistency comparison on the speed combination data of the train acquired by the two speed acquisition units in each speed acquisition module, carrying out consistency comparison on the auxiliary positioning data of the train acquired by the two positioning acquisition units in each positioning acquisition module, and transmitting the successfully compared speed combination data and the successfully compared auxiliary positioning data to the vehicle-mounted system.
Preferably, the auxiliary positioning device of the train is a transponder.
Preferably, the speed acquisition unit and the positioning acquisition unit both adopt FPGAs.
Preferably, each data processing unit is connected with all the speed acquisition units and all the positioning acquisition units through an M-LVDS bus.
On the other hand, the invention also provides a use method of the train speed measuring and positioning safety platform, which comprises the following steps:
connecting the data processing module group with a train-mounted system of the train;
connecting a speed acquisition module group with speed measuring equipment of a train to acquire speed data of the train;
connecting a positioning acquisition module group with auxiliary positioning equipment of the train to acquire auxiliary positioning data of the train; and
and enabling the data processing module group to respectively perform two-out-of-two comparison processing on the speed data and the auxiliary positioning data of the train, and transmitting the successfully compared speed data and the successfully compared auxiliary positioning data to the vehicle-mounted system.
Preferably, before the step of connecting the speed acquisition module group with the speed measurement device of the train, the method further includes:
the vehicle-mounted system generates a configuration file, and the configuration file comprises types of the selected first sensor and the second sensor;
and the data processing module group reads the configuration file to generate a first communication parameter corresponding to the selected first sensor type and a second communication parameter corresponding to the selected second sensor type, and transmits the first communication parameter and the second communication parameter to the speed acquisition module group.
Preferably, each speed acquisition unit is connected with a first sensor of a corresponding type according to the first communication parameter, and is connected with a second sensor of a corresponding type according to the second communication parameter, so as to acquire first speed data and second speed data of the train, and obtain speed combination data of the train.
Preferably, the type of the first sensor selected in the configuration file is a pulse rotational speed sensor, and the type of the second sensor selected in the configuration file is one or any combination of a doppler radar, an optical speed sensor, a GNSS speed measuring device and an accelerometer.
Preferably, each speed acquisition unit acquires first speed data and second speed data of the train once every other preset period and transmits the first speed data and the second speed data to each data processing unit;
and each positioning acquisition unit acquires the auxiliary positioning data of the train once every other preset period and transmits the auxiliary positioning data to each data processing unit.
Preferably, the preset period is 30 to 80ms.
Preferably, the step of making the data processing module group perform two-out-of-two comparison processing on the speed data and the auxiliary positioning data of the train respectively comprises:
each data processing unit is used for carrying out consistency comparison on the speed combination data of the trains acquired by the two speed acquisition units in each speed acquisition module and transmitting the successfully compared speed combination data of the trains to the vehicle-mounted system;
each data processing unit is used for carrying out consistency comparison on the auxiliary positioning data of the train, which are acquired by the two positioning acquisition units in each positioning acquisition module, and transmitting the auxiliary positioning data of the train which is successfully compared to the vehicle-mounted system.
Compared with the prior art, the invention has at least one of the following advantages:
the invention provides a train speed measurement positioning safety platform and a using method thereof, wherein the speed acquisition module group connected with train speed measurement equipment can acquire speed data of a train, and the positioning acquisition module group connected with train auxiliary positioning equipment can acquire auxiliary positioning data of the train; the data processing module group can respectively carry out two-out-of-two comparison processing on the acquired speed data and the acquired auxiliary positioning data, and transmits the successfully compared speed data and the successfully compared auxiliary positioning data to the vehicle-mounted system, so that the vehicle-mounted system can acquire the position information of the train.
The speed acquisition units in the speed acquisition module group can support different sensors, such as a pulse rotating speed sensor, a Doppler radar, a GNSS speed measuring device, an accelerometer and an optical speed sensor, so that when the sensors required by different vehicle-mounted systems are changed, the configuration requirements can be met under the condition that a speed measuring and positioning safety platform is not required to be redesigned, the research and development cost is saved, and the stability, the universality and the reusability of the speed measuring and positioning safety platform are improved.
When the vehicle-mounted system is configured with different sensor combinations, the data processing module group can generate corresponding communication parameters according to the types of the sensors required by the vehicle-mounted system, so that the speed acquisition module can acquire the safety data of the required sensors and provide the safety data to the vehicle-mounted system through the data processing module group.
The speed acquisition module group, the positioning acquisition module group and the data processing module group all adopt a two-by-two or two-by-two safety architecture, so that the safety and the reliability of data can be ensured.
According to the invention, when the sensors required by different vehicle-mounted systems are changed, basic functions of data acquisition, verification, comparison and the like are greatly reused, the vehicle-mounted system can obtain the safety data of the required sensors only by configuring the type of the required sensors, the research and development time of the whole vehicle-mounted system is shortened, and the research and development efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a train speed measuring and positioning safety platform according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for using a train speed measuring and positioning safety platform according to an embodiment of the present invention;
fig. 3 is a logic diagram of a method for using a train speed measurement and positioning safety platform according to an embodiment of the present invention.
Detailed Description
The train speed measuring and positioning safety platform and the using method thereof provided by the invention are further described in detail in the following with reference to the accompanying drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Combine as shown in figure 1, this embodiment provides a train speed measurement location safety platform, is applied to rail transit train, includes: the speed acquisition module group is connected with the speed measuring equipment of the train and is used for acquiring the speed data of the train; the positioning acquisition module group is connected with auxiliary positioning equipment of the train and is used for acquiring the auxiliary positioning data of the train; and the data processing module group is respectively connected with the speed acquisition module group, the positioning acquisition module group and the vehicle-mounted system of the train, and is used for respectively carrying out two-out comparison processing on the acquired speed data and the acquired auxiliary positioning data of the train and transmitting the successfully compared speed data and the successfully compared auxiliary positioning data to the vehicle-mounted system so as to acquire the position information of the train.
With continued reference to fig. 1, the speed measuring device of the train includes: a first sensor and a second sensor; the first sensor is used for acquiring first speed data of the train, and the second sensor is used for acquiring second speed data of the train; the first speed data and the second speed data of the train form speed combination data of the train; and the vehicle-mounted system can obtain the actual running speed of the train according to the speed combination data of the train.
Specifically, in this embodiment, the type of the first sensor is a pulse rotation speed sensor; the types of the second sensor include a doppler radar, an optical velocity sensor, a GNSS velocity measurement device, and an accelerometer, but the present invention is not limited thereto.
With reference to fig. 1, the speed acquisition module set includes a first speed acquisition module and a second speed acquisition module that are redundant with each other; the first speed acquisition module and the second speed acquisition module both comprise two speed acquisition units; each speed acquisition unit is respectively connected with the first sensor and the second sensor and is used for acquiring the first speed data and the second speed data of the train so as to obtain the speed combination data of the train.
Specifically, in this embodiment, the speed acquisition module group adopts a two-by-two-out-of-two security architecture; the redundancy design of the first speed acquisition module and the second speed acquisition module can ensure the reliability of the speed combination data acquisition of the train; each speed acquisition module is provided with two independent speed acquisition units, and can provide conditions for two-out-of-two comparison processing of the speed combination data of the train, so that the safety of the acquired speed combination data of the train is ensured. More specifically, two speed acquisition units in the first speed acquisition module may be denoted as a first speed acquisition unit and a second speed acquisition unit, and two speed acquisition units in the second speed acquisition module may be denoted as a third speed acquisition unit and a fourth speed acquisition unit, but the present invention is not limited thereto.
Specifically, in the present embodiment, the number of the first sensors is 3 according to the relevant railway standard, and the first sensors are independent from each other; each speed acquisition unit can be provided with 3 first interfaces to correspondingly connect with 3 first sensors, so that output data of the 3 first sensors, namely 3 first speed data, can be acquired to meet relevant railway standards. Each speed acquisition unit can be provided with 3 second interfaces and can be connected with the second sensor through any one of the second interfaces, so that the output data of the second sensor, namely the second speed data, can be acquired. Preferably, the second interface is an RS485/482 serial port data interface; according to the requirement of the vehicle-mounted system, one, two or three of a doppler radar, an optical velocity sensor, a GNSS velocity measurement device and an accelerometer may be selected as the second sensor, but the invention is not limited thereto.
Referring to fig. 1, the positioning and collecting module set includes a first positioning and collecting module and a second positioning and collecting module that are redundant to each other; the first positioning acquisition module and the second positioning acquisition module both comprise two positioning acquisition units; each positioning acquisition unit is connected with the auxiliary positioning equipment and used for acquiring the auxiliary positioning data of the train.
It will be appreciated that the auxiliary locating device of the train is a transponder.
Specifically, in this embodiment, the positioning acquisition module group also adopts a two-by-two-out-of-two security architecture; the redundancy design of the first positioning acquisition module and the second positioning acquisition module can ensure the reliability of the acquisition of the auxiliary positioning data of the train; each location collection module sets up two independence the location collection unit can be for the auxiliary positioning data of train carries out two and gets two comparison processing and provides the condition, thereby guarantees the collection the security of the auxiliary positioning data of train. More specifically, two of the positioning acquisition units in the first positioning acquisition module may be recorded as a first positioning acquisition unit and a second positioning acquisition unit, and two of the positioning acquisition units in the second positioning acquisition module may be recorded as a third positioning acquisition unit and a fourth positioning acquisition unit, but the invention is not limited thereto.
Specifically, in this embodiment, each the location acquisition unit can be provided with 1 third interface, in order to with auxiliary positioning equipment connects, thereby can be to auxiliary positioning equipment's output data is auxiliary positioning data gathers. Preferably, the positioning acquisition unit and the speed acquisition unit both use FPGAs, but the invention is not limited thereto.
With reference to fig. 1, the data processing module group includes a first data processing module and a second data processing module that are redundant to each other; the first data processing module and the second data processing module both comprise two data processing units; each data processing unit is connected with the vehicle-mounted system, all the speed acquisition units and all the positioning acquisition units, and is used for carrying out consistency comparison on the speed combination data of the train acquired by the two speed acquisition units in each speed acquisition module, carrying out consistency comparison on the auxiliary positioning data of the train acquired by the two positioning acquisition units in each positioning acquisition module, and transmitting the successfully compared speed combination data and the successfully compared auxiliary positioning data to the vehicle-mounted system.
It is understood that each of the data processing units is connected to all of the speed acquisition units and all of the positioning acquisition units via an M-LVDS bus.
Specifically, in this embodiment, the data processing module group also adopts a two-by-two or two-out-of-two security architecture; the redundancy design of the first data processing module and the second data processing module can ensure the reliability of key data processing, namely two-out-of-two comparison processing of speed combination data and auxiliary positioning data of the train; each data processing module is provided with two independent data processing units, and a two-out-of-two relation can be formed again, so that the safety of a result obtained after two-out-of-two comparison processing is carried out on the speed combination data and the auxiliary positioning data of the train is guaranteed, and the safety of data output to the vehicle-mounted system is guaranteed. More specifically, two of the data processing units in the first data processing module may be denoted as a first data processing unit and a second data processing unit, and two of the data processing units in the second data processing module may be denoted as a third data processing unit and a fourth data processing unit. Preferably, part or all of the functions of the on-board system may be loaded onto the data processing unit for operation, but the invention is not limited thereto.
Specifically, in this embodiment, when the data processing unit performs two-out-of-two comparison processing, that is, consistency comparison, on the speed combination data of the train, if the first speed data and the second speed data of the train, which are acquired by two speed acquisition units in the same speed acquisition module, are correspondingly consistent, it indicates that the comparison is successful, otherwise, it indicates that the comparison is failed; taking the first speed acquisition module as an example, if first speed data acquired by the first speed acquisition unit in the first speed acquisition module is consistent with first speed data acquired by the second speed acquisition unit and second speed data acquired by the first speed acquisition unit is consistent with second speed data acquired by the second speed acquisition unit, it indicates that the speed combination data acquired by the first speed acquisition module is successfully compared, and the speed combination data can be transmitted to the vehicle-mounted system for application. Similarly, when the data processing unit performs two-out-of-two comparison processing, namely consistency comparison, on the auxiliary positioning data of the train, if the auxiliary positioning data acquired by two positioning acquisition units in the same positioning acquisition module are consistent, the comparison is successful, otherwise, the comparison is failed; taking the first positioning and acquiring module as an example, if the auxiliary positioning data acquired by the first positioning and acquiring unit in the first positioning and acquiring module is consistent with the auxiliary positioning data acquired by the second positioning and acquiring unit, it indicates that the auxiliary positioning data acquired by the first positioning and acquiring module is successful, and the auxiliary positioning data can be transmitted to the vehicle-mounted system for application, but the invention is not limited thereto.
As shown in fig. 2 to 3, this embodiment further provides a use method of the above train speed measurement and positioning safety platform, including: step S110, connecting the data processing module group with a train-mounted system; step S120, connecting a speed acquisition module group with speed measurement equipment of a train to acquire speed data of the train; step S130, connecting a positioning acquisition module group with auxiliary positioning equipment of the train to acquire auxiliary positioning data of the train; and step S140, enabling the data processing module group to respectively carry out two-out-of-two comparison processing on the speed data and the auxiliary positioning data of the train, and transmitting the successfully compared speed data and the successfully compared auxiliary positioning data to the vehicle-mounted system.
With continued reference to fig. 2 and fig. 3, before executing the step S120, the method further includes: the vehicle-mounted system generates a configuration file according to the self requirement, and the configuration file comprises the types of the selected first sensor and the second sensor; and the data processing module group reads the configuration file to generate a first communication parameter corresponding to the selected first sensor type and a second communication parameter corresponding to the selected second sensor type, and transmits the first communication parameter and the second communication parameter to the speed acquisition module group.
It will be appreciated that the first sensor type selected for use in the profile is a pulse rate sensor and the second sensor type selected for use is one or any combination of a doppler radar, an optical velocity sensor, a GNSS speed measurement device and an accelerometer.
Specifically, in this embodiment, the number of types of the second sensors selected in the configuration file is further related to the number of the second interfaces set on the speed acquisition unit; if the number of the second interfaces arranged on the speed acquisition unit is three, the type of the second sensor selected in the configuration file can be one, two or three of a doppler radar, an optical speed sensor, a GNSS speed measurement device and an accelerometer; if the number of the second interfaces arranged on the speed acquisition unit is two, the type of the second sensor selected in the configuration file is one or two of a Doppler radar, an optical speed sensor, a GNSS speed measuring device and an accelerometer. In addition, the configuration file further comprises parameters of a first sensor and a second sensor, wherein the parameters of the first sensor can be a duty ratio and a phase difference checking range of a pulse rotating speed sensor, and the parameters of the second sensor can be a baud rate of a Doppler radar, an optical speed sensor, a GNSS speed measuring device or an accelerometer, and the like; the data processing unit may generate a corresponding first communication parameter according to the type and parameter of the selected first sensor and generate a corresponding second communication parameter according to the type and parameter of the selected second sensor, and transmit the second communication parameter to the speed acquisition unit, but the invention is not limited thereto.
Specifically, in this embodiment, before each data processing unit transmits the generated first communication parameter to the speed acquisition unit, the speed acquisition unit is initialized; after initialization is finished, each data processing unit can also perform self-checking on the data acquisition function of the speed acquisition unit, and if the self-checking is successful, the first communication parameters are transmitted to the corresponding speed acquisition units; and if the self-checking fails, the corresponding speed acquisition unit is down. Similarly, before each data processing unit transmits the generated second communication parameters to the positioning acquisition unit, the positioning acquisition unit is initialized; after initialization is finished, each data processing unit also carries out self-checking on the data acquisition function of the positioning acquisition unit, and if the self-checking is successful, the second communication parameters are transmitted to the corresponding positioning acquisition units; if the self-checking fails, the corresponding positioning collecting unit is down, but the invention is not limited to this.
With continuing reference to fig. 2 and fig. 3, each of the speed acquisition units is connected to a first sensor of a corresponding type according to the first communication parameter and connected to a second sensor of a corresponding type according to the second communication parameter to acquire first speed data and second speed data of the train, so as to obtain speed combination data of the train.
It can be understood that each speed acquisition unit acquires the first speed data and the second speed data of the train once every preset period and transmits the acquired data to each data processing unit; and each positioning acquisition unit acquires the auxiliary positioning data of the train once every other preset period and transmits the auxiliary positioning data to each data processing unit.
Specifically, in this embodiment, each of the speed acquisition units and each of the positioning acquisition units periodically and correspondingly acquire first speed data and second speed data of the train and auxiliary positioning data, and transmit the first speed data and the second speed data and the auxiliary positioning data to each of the data processing units through an M-LVDS bus; and the preset period may be 30 to 80ms. Preferably, the preset period is 50ms, but the invention is not limited thereto.
With continuing reference to fig. 2 and fig. 3, the step S140 includes: each data processing unit is used for carrying out consistency comparison on the speed combination data of the trains acquired by the two speed acquisition units in each speed acquisition module and transmitting the successfully compared speed combination data of the trains to the vehicle-mounted system; each data processing unit is used for carrying out consistency comparison on the auxiliary positioning data of the train, which are acquired by the two positioning acquisition units in each positioning acquisition module, and transmitting the auxiliary positioning data of the train which is successfully compared to the vehicle-mounted system.
Specifically, in this embodiment, after each of the data processing units receives the speed combination data transmitted by each of the speed acquisition units and the auxiliary positioning data transmitted by each of the positioning acquisition units, and before the step S140 is executed, each of the data processing units also checks timeliness, authenticity and integrity of the received speed combination data and auxiliary positioning data, if the check is successful, the step S140 is executed, and if the check is failed, the data is discarded, but the invention is not limited thereto.
Specifically, in this embodiment, in the step S140, when the speed combination data acquired by two speed acquisition units in the same speed acquisition module are consistent, the comparison is successful, otherwise, the comparison is failed and the data needs to be discarded. More specifically, before the speed combination data which is successfully compared is transmitted to the vehicle-mounted system, each data processing unit needs to perform state detection on a speed acquisition module corresponding to the data to be transmitted so as to judge whether the state of the speed acquisition module is healthy or not; the working current, the working temperature and the safety clock of the module are normal, the consistency of the corresponding data is successful, and the like, which indicate that the state of the module is healthy, and otherwise, the state of the module is unhealthy. If the state of the used speed acquisition module is unhealthy, data acquired by a speed acquisition unit in another healthy speed acquisition module needs to be transmitted to the vehicle-mounted system; if the states of the two speed acquisition modules, namely the first speed acquisition module and the second speed acquisition module, are not healthy, the system needs to be shut down, but the invention is not limited thereto.
Similarly, when the auxiliary positioning data acquired by two positioning acquisition units in the same positioning acquisition module are consistent, the comparison is successful, otherwise, the comparison is failed and the data needs to be discarded. More specifically, before the auxiliary positioning data that is successfully compared is transmitted to the vehicle-mounted system, each data processing unit further needs to perform state detection on a positioning acquisition module corresponding to data to be transmitted so as to determine whether the state of the positioning acquisition module is healthy; the working current, the working temperature and the safety clock of the module are normal, the consistency of the corresponding data is successful, and the like, which indicate that the state of the module is healthy, and otherwise, the state of the module is unhealthy. If the states of the used positioning acquisition modules are unhealthy, the data acquired by the positioning acquisition unit in the other healthy positioning acquisition module needs to be transmitted to the vehicle-mounted system, and if the states of the two positioning acquisition modules, namely the first positioning acquisition module and the second positioning acquisition module, are unhealthy, the vehicle-mounted system needs to be shut down, but the invention is not limited thereto.
In summary, the present embodiment provides a train speed measurement and positioning safety platform and a use method thereof, where a speed acquisition module group connected to a train speed measurement device can acquire speed data of a train, and a positioning acquisition module group connected to a train auxiliary positioning device can acquire auxiliary positioning data of the train; the data processing module group can respectively carry out two-out-of-two comparison processing on the acquired speed data and the acquired auxiliary positioning data, and transmit the successfully compared speed data and auxiliary positioning data to the vehicle-mounted system, so that the vehicle-mounted system can acquire the position information of the train. The speed acquisition unit in the speed acquisition module group in this embodiment can support different sensors, for example pulse tachometric sensor, doppler radar, GNSS speed sensor, accelerometer and optical velocity sensor for when the required sensor of different on-vehicle systems changes, can satisfy the configuration requirement under the condition that need not redesign location safety platform that tests the speed, practiced thrift the research and development cost, improved the stability, commonality and the rate of reusability of location safety platform that tests the speed simultaneously. Meanwhile, the speed acquisition module group, the positioning acquisition module group and the data processing module group all adopt a two-by-two safety architecture, so that the safety and the reliability of data can be ensured.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (16)
1. The utility model provides a train location safety platform that tests speed, is applied to rail transit train which characterized in that includes:
the speed acquisition module group is connected with the speed measuring equipment of the train and is used for acquiring the speed data of the train;
the positioning acquisition module group is connected with auxiliary positioning equipment of the train and is used for acquiring auxiliary positioning data of the train; and
and the data processing module group is respectively connected with the speed acquisition module group, the positioning acquisition module group and the vehicle-mounted system of the train, and is used for respectively carrying out two-out comparison processing on the acquired speed data and the acquired auxiliary positioning data of the train and transmitting the successfully compared speed data and the successfully compared auxiliary positioning data to the vehicle-mounted system so as to acquire the position information of the train.
2. The train speed-measuring and positioning safety platform as claimed in claim 1, wherein the speed-measuring device of the train comprises: a first sensor and a second sensor; the first sensor is used for acquiring first speed data of the train, and the second sensor is used for acquiring second speed data of the train; and the first speed data and the second speed data of the train constitute speed combination data of the train.
3. The train speed-measuring and positioning safety platform as claimed in claim 2, wherein the first sensor is a pulse speed sensor; the types of the second sensor include a doppler radar, an optical velocity sensor, a GNSS speed measurement device, and an accelerometer.
4. The train speed-measuring and positioning safety platform of claim 3,
the speed acquisition module group comprises a first speed acquisition module and a second speed acquisition module which are redundant with each other;
the first speed acquisition module and the second speed acquisition module both comprise two speed acquisition units;
each speed acquisition unit is respectively connected with the first sensor and the second sensor and is used for acquiring first speed data and second speed data of the train so as to obtain speed combination data of the train.
5. The train speed measuring and positioning safety platform of claim 4,
the positioning acquisition module group comprises a first positioning acquisition module and a second positioning acquisition module which are redundant with each other;
the first positioning acquisition module and the second positioning acquisition module both comprise two positioning acquisition units;
each positioning acquisition unit is connected with the auxiliary positioning equipment and used for acquiring the auxiliary positioning data of the train.
6. The train speed-measuring and positioning safety platform of claim 5,
the data processing module group comprises a first data processing module and a second data processing module which are redundant with each other;
the first data processing module and the second data processing module both comprise two data processing units;
each data processing unit is connected with the vehicle-mounted system, all the speed acquisition units and all the positioning acquisition units, and is used for performing consistency comparison on the speed combination data of the train acquired by the two speed acquisition units in each speed acquisition module, performing consistency comparison on the auxiliary positioning data of the train acquired by the two positioning acquisition units in each positioning acquisition module, and transmitting the successful speed combination data and the successful auxiliary positioning data to the vehicle-mounted system.
7. The safety platform for train speed measurement and positioning according to claim 1, wherein the auxiliary positioning device of the train is a transponder.
8. The train speed-measuring and positioning safety platform according to claim 5, wherein the speed acquisition unit and the positioning acquisition unit both use FPGA.
9. The train speed-measuring and positioning safety platform according to claim 5, wherein each data processing unit is connected with all the speed acquisition units and all the positioning acquisition units through an M-LVDS bus.
10. The use method of the train speed measuring and positioning safety platform according to any one of claims 1 to 9, comprising the following steps:
connecting the data processing module group with a train-mounted system of the train;
connecting a speed acquisition module group with speed measuring equipment of a train to acquire speed data of the train;
connecting a positioning acquisition module group with auxiliary positioning equipment of the train to acquire auxiliary positioning data of the train; and
and enabling the data processing module group to respectively perform two-out-of-two comparison processing on the speed data and the auxiliary positioning data of the train, and transmitting the successfully compared speed data and the successfully compared auxiliary positioning data to the vehicle-mounted system.
11. The method for using the train speed-measuring and positioning safety platform according to claim 10, wherein before the step of connecting the speed-collecting module set with the speed-measuring device of the train, the method further comprises:
the vehicle-mounted system generates a configuration file, and the configuration file comprises types of the selected first sensor and the second sensor;
and the data processing module group reads the configuration file to generate a first communication parameter corresponding to the selected first sensor type and a second communication parameter corresponding to the selected second sensor type, and transmits the first communication parameter and the second communication parameter to the speed acquisition module group.
12. The method for using the train speed-measuring and positioning safety platform according to claim 11, wherein each speed-collecting unit is connected to a first sensor of a corresponding type according to the first communication parameter, and is connected to a second sensor of a corresponding type according to the second communication parameter, so as to collect the first speed data and the second speed data of the train, thereby obtaining the speed combination data of the train.
13. The use method of the train speed measuring and positioning safety platform according to claim 11,
the type of the first sensor selected in the configuration file is a pulse rotating speed sensor, and the type of the second sensor selected in the configuration file is one or any combination of a Doppler radar, an optical speed sensor, a GNSS speed measuring device and an accelerometer.
14. The use method of the train speed measuring and positioning safety platform according to claim 12,
each speed acquisition unit acquires first speed data and second speed data of the train once every other preset period and transmits the first speed data and the second speed data to each data processing unit;
and each positioning acquisition unit acquires the auxiliary positioning data of the train once every other preset period and transmits the auxiliary positioning data to each data processing unit.
15. The use method of the train speed-measuring and positioning safety platform according to claim 14, wherein the preset period is 30-80 ms.
16. The method for using the train speed-measuring and positioning safety platform according to claim 14, wherein the step of comparing the speed data and the auxiliary positioning data of the train with two values by the data processing module group comprises:
each data processing unit carries out consistency comparison on the speed combination data of the trains acquired by the two speed acquisition units in each speed acquisition module, and transmits the successfully compared speed combination data of the trains to the vehicle-mounted system;
and each data processing unit compares the consistency of the auxiliary positioning data of the train acquired by the two positioning acquisition units in each positioning acquisition module, and transmits the successfully-compared auxiliary positioning data of the train to the vehicle-mounted system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112049.7A CN115465334A (en) | 2022-09-13 | 2022-09-13 | Train speed measurement and positioning safety platform and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112049.7A CN115465334A (en) | 2022-09-13 | 2022-09-13 | Train speed measurement and positioning safety platform and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115465334A true CN115465334A (en) | 2022-12-13 |
Family
ID=84332890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211112049.7A Pending CN115465334A (en) | 2022-09-13 | 2022-09-13 | Train speed measurement and positioning safety platform and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115465334A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724145A (en) * | 2015-02-26 | 2015-06-24 | 中国铁路总公司 | Train speed and range measurement system |
| US20170349194A1 (en) * | 2014-08-05 | 2017-12-07 | Panasec Corporation | Positive train control system, apparatus and method |
| CN113548087A (en) * | 2021-07-22 | 2021-10-26 | 交控科技股份有限公司 | Vehicle-mounted ATP subsystem, train departure combined control system and method |
-
2022
- 2022-09-13 CN CN202211112049.7A patent/CN115465334A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170349194A1 (en) * | 2014-08-05 | 2017-12-07 | Panasec Corporation | Positive train control system, apparatus and method |
| CN104724145A (en) * | 2015-02-26 | 2015-06-24 | 中国铁路总公司 | Train speed and range measurement system |
| CN113548087A (en) * | 2021-07-22 | 2021-10-26 | 交控科技股份有限公司 | Vehicle-mounted ATP subsystem, train departure combined control system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106941395B (en) | A kind of vehicle carried pick device and localization method | |
| WO2016110915A1 (en) | In-vehicle unit and in-vehicle unit diagnosis system | |
| KR100987319B1 (en) | Active Database based Total Management System and Method for Diagnostic Information and Positioning Information of Vehicle | |
| CN107110975B (en) | Redundant device for a piloting sensor of a rotorcraft | |
| CN109342080B (en) | Vehicle reliability test data collection analysis system based on gyroscope | |
| CN107284477B (en) | A kind of anti-control method and the anti-mobile unit that advances rashly of line end of advancing rashly of line end | |
| CN103250030B (en) | For the equipment positioning vehicle and the method generating vehicle position information | |
| CN105866812A (en) | Novel vehicle combination positioning algorithm | |
| CN103930797A (en) | Time-corrected sensor system | |
| CN102753395A (en) | Vehicle sensor node | |
| CN110745162A (en) | Train integrity checking method and system | |
| CN106560371A (en) | Vehicle-mounted ATP system based on vehicle-mounted positioning and acceleration sensor | |
| CN108983270A (en) | A kind of train security positioning system and method based on Multi-sensor Fusion | |
| CN103063218B (en) | Vehicle remote monitoring and trajectory reproducing system and trajectory reproducing method thereof | |
| CN104316716B (en) | A kind of GPS velocity information improves the method for vehicular speeds table | |
| EP3155374A1 (en) | Method and system for initializing a sensor fusion system | |
| CN109975851A (en) | A kind of train line fault point accurate positioning method and system | |
| CN103781641B (en) | The method of the data in the tire pressure monitoring system of filter motor-car | |
| CN115465334A (en) | Train speed measurement and positioning safety platform and use method | |
| Masino et al. | Development of a highly accurate and low cost measurement device for Field Operational Tests | |
| CN107310493A (en) | A kind of school bus intelligent interactive method and its system | |
| CN111829793A (en) | Driving process comfort evaluation method, device and system based on combined positioning | |
| CN105843219A (en) | Vehicle-mounted automobile fault diagnosis instrument having the function of navigation fault automatic detection | |
| CN216433011U (en) | Vehicle-mounted high-precision fusion positioning terminal | |
| CN205971371U (en) | On -vehicle ATP system based on satellite positioning and acceleration sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |